<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<script type="text/javascript" src="js/jquery-1.12.4.min.js"></script>
	<script type="text/javascript">
		
		$(function(){

			$('#btn').bind('click mouseover',function(){

				alert('bind');

				$(this).unbind('mouseover'); //解绑
			})




		})
	</script>
</head>
<body>
	<input type="button" name="" value="bind" id="btn">
</body>
</html>